Open the Camera app from the Start menu to see if the device is active before downloading third-party software.
If you plug it in and it does not work:
Once you have downloaded the driver package, follow these steps for a clean installation: tosy qf 703 usb camera drivers full version link
So unplug that camera, fire up Device Manager, and let your computer tell you what it really is. Once you have the VID and PID, the driver is just a few clicks away. Open the Camera app from the Start menu